Inject values into all events processed by a Logger/Appender

Source: R/Filter.R

Inject arbitrary values into all LogEvents processed by a Logger/Appender. It is recommended to use filters that modify LogEvents only with Loggers, but they will also work with Appenders.

Super class

lgr::EventFilter -> FilterInject

Public fields

values

a named list of values to be injected into each LogEvent processed by this filter

Methods

Public methods

Inherited methods

    Method new()

    Initialize a new FilterInject

    Usage

    FilterInject$new(..., .list = list())

    Arguments

    ..., .list

    any number of named R objects that will be injected as custom fields into all LogEvents processed by the Appender/Logger that this filter is attached to. See also with_log_value().

    Method clone()

    The objects of this class are cloneable with this method.

    Usage

    FilterInject$clone(deep = FALSE)

    Arguments

    deep

    Whether to make a deep clone.

    Examples

    lg <- get_logger("test")

analyse <- function(){
  lg$add_filter(FilterInject$new(type = "analysis"), "inject")
  on.exit(lg$remove_filter("inject"))
  lg$error("an error with forced custom 'type'-field")
}

analyse()
#> ERROR [20:04:27.715] an error with forced custom 'type'-field {type: `analysis`}
lg$error("an normal error")
#> ERROR [20:04:27.725] an normal error
lg$config(NULL)  # reset config
#> <Logger> [info] test
#> 
#> inherited appenders:
#>   console: <AppenderConsole> [all] -> console